[Filters & Oil] DPF Issue or Fault Elsewhere??

[ntm1275]

So took the Eloys tank off today and the bag looks like it is 85% full and there are no leaks from the bag
I also removed the motor from the pump and hooked up a 9v battery to test that it was working and it was.

I have also told Diagbox that there is a new Eloys bag etc

The warning message is still there

I'm now thinking of temporarily wiring a small bulb on to the pump motor to see if it lights up when the fuel cap in removed/replaced to see if it is getting activated

I'm starting to run out of ideas

If the bulb does light up then it's not the fuel cap or Eloys pump that is at fault